Visits Of Et Life Forms To Earth example essay topic

ET's & UFO's Nearly 600 years before Christ was born, the biblical prophet Ezekiel saw something unusual, very unusual, that he tried to explain; 'And I looked and behold a whirlwind came out of the north, a great cloud, and a fire enfolding itself. Also out of the midst thereof came the likeness of four living creatures. ' ; Since then, several similar Unidentified Flying Objects (UFO's) are reported around the world. The Romans, the Greeks, moreover the great emperor Charlemagne saw it... saw what?

For Christians, there is no doubt about it; Ezekiel described angels coming down on Earth bringing messages from God. However, this is not the only possible explanation. Where scientists see a complex natural phenomenon, others will see a 'wheel in the middle of a wheel'; simply as an extra-terrestrial vehicle observing our planet Earth. The movie 'UFO's, It Has Begun's e ems to be persuading enough to prove that extra-terrestrials do visit Earth. Burnt grass, cattle mutilations, capturing aliens, photographs, strange powder; all this evidence is presented in the movie. Unfortunately, most of it is incomplete, and there is nothing that could explain the sightings, besides, incredible film techniques and mysterious music highlights the obvious bias of the movie.

On the other hand, 96 per cent of all the sightings can be explained by today's science, that are identified as Venus, the Moon, reflections of light, electric charges, and weather balloons. The remaining 4 per cent maybe flying saucers which scientists deny the idea. Truly, if we think about the unimaginable time and energy needed for such an interstellar journey, it seems that visits of ET life forms to earth are quite unlikely. Stanley Miller showed in 1953 that organic molecules can be made if ammonia, water vapour and hydrogen were irradiated. Therefore, scientists do have a strong belief that ET's exist. An American astronomer, Frank Drake, tried to detail the probability of life elsewhere in the galaxy, and according to him, 10 per cent of nearly 400 billion stars in our galaxy are similarly like our sun.

Therefore about 40 billion are possibly life-giving stars, and of these, maybe only 4 billion are like our Earth. The remaining 90 per cent are either too hot or too cold. Of course life and intelligence are not the same, and that means that our Earth is surrounded by at least 400 galactic neighbours. Later on, humans decided to launch signals into space with modern technology, in hope to make contact with aliens. Since it would take thousands of years to receive an answer, scientists thought it would be better to listen rather than sending signals. Important Organisations such as the National Aeronautic Space Administration (NASA) and the Jet Propulsion Laboratory have invested millions of dollars in the search for extra-terrestrials.

In Puerto Rico for example, a giant satellite dish is installed for scanning the sky. Up to now, scientists have received many unusual signs, some of which looking quite alien-made. Unfortunately, these signals that were received never stayed long enough to be studied or checked. To conclude, I must say that even if the majority of scientists want to discover extra-terrestrial life, some think it is highly insecure to do so. The history of the New World after 1492 shows that undeveloped civilisations are the ones who suffer when the developed make attempts such as contacting ET's. Indeed, if it is very unlikely that extra-terrestrials are visiting Earth, the chance of life, intelligent or not, that has developed on some distant planet is very high.

As the Drake equation proves, we cannot possibly be the only ones occupying this vast universe!